I have ask this question before . This has just started when the car is shutoff and the headlights are still on as are the interior lights they start to blink .they donot do it when the light switch is not pulled out . So I have either a bad light switch or is there something else that would cause this ploblem of blinking lights .

Help Thank You

 

possible bcm problem, or headlight module prob. def electrical, and should be checked by qualified service techs.